Pilot Study of the QI Device for Monitoring of Patients With Congestive Heart Failure

Pilot Study of the Quanttus Device for Monitoring of Patients With Congestive Heart Failure

The present study proposes to utilize a novel, wearable device, QI Device, which has multiple sensors embedded in a "wrist-watch" in order to explore its monitoring capabilities in individuals with congestive heart failure.

The QI Device is a self-contained, reusable, rechargeable, battery-powered, wrist-watch that simultaneously tracks and records a number of physiological health related parameters such as heart rate, blood pressure, respiratory rate, temperature, and motion/position. One advantage of this device over current home diagnostic systems is the capability for longitudinal monitoring.

Inclusion Criteria:

• Adults over age 18

• Own, and comfortable using, a home computer with internet access (Phase 2 only)

• Acute hospitalization with a primary diagnosis of acute decompensated heart failure (ADHF) diagnosed on the basis of all of the following:

  1. Symptoms:

     • Onset or worsening of dyspnea within the past 2 weeks

  2. Physical exam (at least 1 present):

     • Rales/ Crackles on auscultation
     • Elevated JVP > 10 cmH2O
     • Weight gain
     • LE edema

  3. Diagnostic imaging/ labs (at least 1 present):

     • Evidence of pulmonary congestion or edema on chest X-ray/ chest CT
     • Elevated BNP or NT-pro-BNP (age-adjusted)

Exclusion Criteria:

• Psychological or social situation that would make the study difficult for the patient
• Inability to consent
• Chronic atrial fibrillation or other dysrhythmia with a high (>10%) burden of ectopic beats.
• Pregnant women
• Pneumonia - currently, or within the past 30 days
• Non-cardiogenic pulmonary edema (e.g. ARDS)
• Interstitial lung disease
• End-stage renal disease and on Hemodialysis